feat: Add ERC20-like Token

[mvines]

No description provided.

[mvines]

This PR is expected to fail until solana-labs/solana#1451 lands

[codecov-io]

Codecov Report

Merging #19 into master will decrease coverage by 1.42%.
The diff coverage is 92.59%.

@@            Coverage Diff             @@
##           master      #19      +/-   ##
==========================================
- Coverage    94.5%   93.08%   -1.43%     
==========================================
  Files           6       11       +5     
  Lines         273      347      +74     
  Branches       25       40      +15     
==========================================
+ Hits          258      323      +65     
- Misses         15       24       +9

Impacted Files	Coverage Δ
src/connection.js	88.5% <ø> (ø)	⬆️
src/publickey.js	100% <ø> (+4.54%)	⬆️
src/budget-program.js	97.77% <100%> (+0.02%)	⬆️
test/url.js	100% <100%> (ø)
src/system-program.js	100% <100%> (ø)	⬆️
src/layout.js	100% <100%> (ø)
src/util/sleep.js	100% <100%> (ø)
src/util/send-and-confirm-transaction.js	88.88% <88.88%> (ø)
src/token-program.js	91.3% <91.3%> (ø)
src/transaction.js	86.95% <92.3%> (-7.92%)	⬇️
... and 6 more

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[mvines]

🎉 This PR is included in version 0.4.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

Because there has been no activity on this PR for 14 days since it was merged, it has been automatically locked. Please open a new issue if it requires a follow up.